Valence Electrons Worksheet

1. Valence Electron Worksheet Name _______________________________
Lewis Structures Date _____________________ Period _____
1. How many electrons are in the following elements?
A. Carbon
B. Chlorine
C. Indium
D. Calcium
E. Tungsten
F. Antimony
2. Draw Lewis Structures for each of the following elements. How many electrons are in their outer shells?
A. Silicon
B. Potassium
C. Sulfur
D. Boron
E. Beryllium
F. Argon
3. Circle the valence electrons only. How many valence electrons does each atom have?
4. Finish the sentence: Elements in the same group have the same number of ___________ electrons.
5. Fill in the electrons for the following elements. Use your work to answer how many valence electrons
each element has.
Example: C (carbon): 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___#valence electrons __4__
He: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in helium _____
Cl: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in chlorine _____
Li: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in lithium _____
B: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in boron _____
F: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in fluorine _____
Ar: 1S___ 2S___ 2P___ ___ ___ 3S___ 3P___ ___ ___Number of valence electrons in argon _____